It was confusing because they weren't 100% clear about it.
But the change to the 2025 ST was messaged last year. They sent an email in the Summer saying the 2025 ST distributions would change for Band 6.
These distribute in 2026, 2027, and 2028 and be come as VZ stock (minus taxes) in lieu of cash. All previous grants from before 2025 would still distribute as cash (minus taxes).
So, the 1st grant from 2025 was distributed as Stock on March 1. The 3rd from 2023 and 2nd from 2024 distributed in Cash (minus taxes) the following 2 weeks.
AFAIK even though taxes were taken out of the VZ stock distribution, capital gains taxes could be taken out if selling at a profit above that price. Based on the current stock price that dipped below $50, you wouldn't pay any additional taxes to sell.